On August 9, 2013, after the Securities and Exchange Commission's Office of Compliance Inspections and Examinations (OCIE) examiners observed options trading strategies that appear to evade certain requirements of the short-sale rule, the SEC issued a Risk Alert to help market participants detect and prevent options trading that circumvents an SEC short-sale rule. The alert describes the strategies used by some customers, broker-dealers and clearing firms, summarizes related enforcement actions, and notes practices that some firms have found to be effective in detecting and preventing trading intended to evade the rule, known as Regulation SHO. SEC Press Release 2013-151.